Congrats. I am currently liberally mixing DC Direct and Mattel's DCUC to build an expansive DCU in roughly the same scale. The great thing is that the two companies each have a diverse selection of characters that complement each other.

I mix in a lot of the DC Direct GL characters (Kryb, some of the Black Lanterns, a few of the alien GL's, etc.), and a few other types (the Despero from a few years ago, Circe).

I don't buy that many heroes, though, as I figure DCUC will get around to most of them. My collection is dominated by DCUC, however (about 90%).

Of course, I buy just about all of the Aqua-related DCD figures and have amassed a decent collection of those (including Mera, Garth, Aqualad, Ocean Master, and of course a dozen or so Aquamen). My only chance of ever getting a Tula, Aquagirl, or Fisherman probably relies on DC Direct (and the odds are still pretty slim at that).

_________________Leave it up to a billionaire to buy the world some time --- Tony Stark